linux-kernel - Re: [PATCH] arm64: dts: fsl: imx8mq: enable the thermal management unit (TMU)

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Message-ID: <9f25fb1a0acb35539dcd802502c49058@www.akkea.ca>
Date:   Tue, 12 Mar 2019 13:18:59 -0700
From:   Angus Ainslie <angus@...ea.ca>
To:     Andrey Smirnov <andrew.smirnov@...il.com>
Cc:     Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <festevam@...il.com>,
        Sascha Hauer <kernel@...gutronix.de>,
        Lucas Stach <l.stach@...gutronix.de>,
        Abel Vesa <abel.vesa@....com>, daniel.baluta@....com,
        agx@...xcpu.org, dl-linux-imx <linux-imx@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: fsl: imx8mq: enable the thermal management  unit (TMU)

Hi Andrey,

On 2019-03-11 19:35, Andrey Smirnov wrote:
> On Mon, Mar 11, 2019 at 2:35 PM Angus Ainslie (Purism) <angus@...ea.ca> 
> wrote:
>> 
>> These are the TMU nodes from the NXP vendor kernel
>> 
> 
> Hey Angus,
> 
> TMU block supports multiple thermal zones and vendor kernel doesn't
> really account for that (see below). Latest version of the driver in
> thermal tree now actually supports that feature (mulit-sensor), so I
> think the code in DT should reflect that as well. I recently submitted
> a series adding HWMON integration for TMU
> (https://lore.kernel.org/lkml/20190222200508.26325-1-andrew.smirnov@gmail.com/T/#u)

I tried applying those to linux-next. They don't apply very cleanly 
there so I gave up.

> and this is my take on this patch:
> 
> https://github.com/ndreys/linux/commit/09931e3d60af0a74377307b433db97da1be31570
> 
> All of the code there is up for grabs, if you feel like using it.
> 

I followed that and I have a version that works with linux-next that 
does not include the GPU
and VPU parts.

I also tested a version with the GPU and VPU parts and it "works" but 
creates 2 useless
paths in /sys/class/thermal .

Should I wait for your changes to get into linux-next or resubmit a 
version that works with the current one ?

Thanks
Angus